>General Running>Garmin HR monitor problems
I recently started using a Garmin 35 HR monitor and the HR results seem to vary greatly. I can run the same pace on the same course 3 days in a row and get very different reading. 120 one day and 166 the next. It doesn't seem accurate. Anyone else have the same issue?
I don't use that particular HR monitor, but they can be affected by dry air especially in the winter. Have you tried wetting the contacts before you put it on? You can also try some of the electrode gel if the humidity is really low.
I don't trust the HRM in winter. I am sure I can't run 6 miles at 180+ HR (see my run this past Sunday), when I am just running easy. My theory is that in the absence of a good signal, the watch just locks into your cadence, especially with optical HRM. This is not supposed to happen with chest strap, but it sure does in my case.
Thanks for the feedback, paulv and Happyfeet. It definitely has been dry and low humidity here in Michigan so that could be the issue.
I guess I'm old fashioned, because I don't trust any heart rate monitors, other than chest strap. However, having said that, I totally agree with what's already been said about cold/dry conditions, regardless of type of HR monitor. I can ride my bike for a couple miles before producing enough consistent and constant moisture to get and maintain an accurate reading (provided I'm riding hard)...and I live in Jacksonville, Fl
not bad for mile 25
Hmm, my impression has been that today's wrist monitors are as good or better than chest straps. I've only used a chest strap a couple of times, and it was old, but I have no issues at all with my wrist HR.
I've been using a wrist-based HRM for 3 years (originally a Garmin 235 and now a Fenix 5S) and have had very few problems. Having accumulated over 1,000 runs I can confidently say the only issues I've had are:
Overall though that's a problem with less than 2% of runs and let's not forget that chest straps are also susceptible to electrical interference or issues with lack of moisture. For the extra convenience/comfort of a wrist-based HRM (which are improving steadily even just through software and firmware updates let alone hardware), it's a no-brainer IMO.
3,000m: 9:07.7 (Nov-21) | 5,000m: 15:39 (Dec-19) | 10,000m: 32:34 (Mar-20)
10km: 33:15 (Sep-19) | HM: 1:09:41 (May-21)* | FM: 2:41:41 (Oct-20)
* Net downhill course
Last race: Xterra Riverhead, 3 Sept, got super muddy.
Up next: Devonport HM, 1 Oct, goal: course PB.
"CONSISTENCY IS KING"